Meghan Markle and Prince Harry released a statement on the Coronation after they received an invitation from King Charles.
The Duke and Duchess of Sussex have confirmed they have been invited to the historic event.
However, the couple has refused to confirm whether they will attend.
A spokesperson for The Duke and Duchess of Sussex told GB News: "I can confirm The Duke has recently received email correspondence from His Majesty's office regarding the coronation.
The couple has refused to confirm whether they will attend.
PA
"An immediate decision on whether The Duke and Duchess will attend will not be disclosed by us at this time."
It comes as the couple will be allowed to stay in Frogmore Cottage until after the Coronation.
Meghan Markle and Prince Harry rushed into crunch talks with King Charles after he told them to vacate Frogmore Cottage within weeks following the publication of Spare.
However, after negotiations, it was agreed they would have until after the Coronation to move out.
Meghan and Prince Harry were first told they would need to leave the property just one day after the Duke of Sussex's autobiography was released.
Harry's memoir Spare contained multiple attacks on senior members of the Royal Family including King Charles's wife Camilla.
It is thought that the Duke of Sussex blasting his stepmother publicly violated a red line for the King.
A spokesperson for the Sussexes confirmed the couple have been asked to leave their UK base, saying: "We can confirm The Duke and Duchess of Sussex have been requested to vacate their residence at Frogmore Cottage."
Queen Elizabeth II gifted Frogmore Cottage to Meghan and Harry in 2018.
PA
Senior working members of the monarchy such as Camilla, Prince William and the Princess of Wales are supportive of the King's decision.
Omid Scobie, a royal commentator close to Meghan and Harry, said the Sussexes view their eviction from Frogmore Cottage as a "cruel final punishment" from King Charles.
Queen Elizabeth II gifted Frogmore Cottage to Meghan and Harry in 2018.
However, the Sussexes have hardly used the royal residence since moving to California via a brief spell in Canada.
